Combined motormeter, vapor trap, and filler cap for radiators of internal-combustion engines



Jan. 25 1-927.

- 1,615,757 K. W. E. HAMANN COMBINEDMOTORMETER. VAPOR TR AP. AND FILLER CAP FOR RADIATORS OF INTERNAL COMBUSTION ENGINES Filed June 8, 1926 2 Sheets-Sheet 1 Kurt ill/115M022, BY

WTTORNEY.

ER CAP FOR RADIATORS ENGINES Jam.-

1927 K. w. E. HAMANN COMBINED MOTORMETER. VAPOR TRAP. AND FILL OF INTERNAL COMBUSTION Filed June 8, 1926 2 Sheets-Sheet 2 Patented Jan. 25, 1927.

UNITED STATES 1,615,757 PATENT QFFECE.

KURT W. E. HAMANN, OF TRUMBULL, CONNECTICUT.

COMBINED MOTORMETER, VAPOR TRAP, AND FILLER CAP FOR RADIATORS OF INTERNAL-COMBUSTION ENGINES.

Application filed June 8, 1926. Serial No. 114,587.

This invention relates to internal combustion engine radiator attachments and pertains particularly to an improved type of radiator filling opening cap.

The primary object of this'invention is the provision, in a manner as hereinafter set forth, of a radiator filling opening cap carrying a structure upon the underside thereof designed to engage the usual overflow tube and seal the radiator underall normal conditions, to cause the pressure therein to be increased upon the increase of temperature of the water within the radiator, thus causing the water to quickly heat up .to a relatively high degree, for as'is Well known, an engine operates at its greatest efficiency when the water in the Water jacket surrounding the same is near the boiling point.

The invention has for another ob]ect the provision, in a manner as hereinafter set forth, of a radiator filling opening cap carrying a trap structure upon the underside thereof having means associated therewith for closing the usual overflow tube of the radiator r to seal the radiator and cause the pressure of i air therein to be raised when the temperature rises, provlsion being made to allow for the escape of steam. or excessive air pressure when the radiator contents reaches the boiling point, and for again sealing the radiator upon the reduction of the temperature of the contents of the radiator.

The invention contemplates the provision of a radiator filling opening cap having a tubular body tapped through the central portion thereof and carrying a hinged cover upon the upper end. The lower end of the tubular body extends into the cap and s connected by a nipple to a sealing structure which sealing structure is adapted to engage over the free upper end of the usual overflow tube. Upon the inner side of the cap there is secured a depending structure of hollow form and having inlet apertures near the upper part thereof, and extending from the tubular member into and to a point adjacent the bottom of the hollow structure, is a connecting pipe member. The hollow structure is partially filled with wateror other fluid and the cap fitted into position in the radiator filling opening with the overflow pipe of the radiator engaged and closed by the aforementioned sealing structure. It will be readily seen from this description that the radiator is sealed and that when the water therein becomes warm the pressure within the radiator will be increased and due to this increased pressure the temperature of the contents of the radiator will be quickly raised. The pressure of the air or steam within the radiator is prevented from reachinga dangerous point due to the fact that when it attains sufiicient pressure, the fluid will be forced out of. the chamber and the pressure will be" relieved through the overflow pipe.

The invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying drawings forming a part of this specification, with the'und'erst anding that the invention is not'confined to any strict conformity with the showing of the drawings but may be changed and modified so long as such changes and modifications mark no material departure from the salient features of the invention as expressed in the appended claims.

In the drawings Figure 1 shows the structure embodying this invention, in vertical section, and shown as applied to the filling spout of an internal combustion engine.

Figure 2 is a transverse section taken upon the line 22 of Figure 1 and,

Figure 3 is another vertical section taken through the structure at right angles to the section line of Figure 1.

Referring now to the drawings in detail wherein like numerals of reference indicate corresponding parts throughoutthe several views, the numeral 1. indicates the upper portion of an internal combustion engine radiator,'the usual upstanding filling nozzle being indicated by the numeral 2. The upper end of the filling nozzle 2 is closed by a cap member 3 which, for the purposes of this invention is provided with a depending annular flange 4 exteriorly threaded to en gage the interior threads of the filling nozzle 2 as indicated at 5.

Secured to and depending from the underside of the cap 3, is an annular receptacle indicated as a whole by the numeral 6. As is clearly shown in Figures 1 and 3, this receptacle is of greaterwidth at the top than at the bottom thereof the walls being made up of a plurality of sections 7 which are set as shown, the inner and outer lowermost ones of the sections 7 being set closer to til gether than the superposed sections and these superposed sections are in turn closer together than the uppermost sections. The receptacle is closed by the bottom portion 8. Extending inwardly from the top edge of the inner wall of the receptacle, is an annular flange 9 which bears againstthe underside of the cap 3 and is secured thereto by bolts or other appropriate securing members 10. The upper sec tion 7 of the inner wall of the receptacle is provided with a plurality of apertures 11 which extend entirely around the inner wall.

Extending through the central portion of the cap 3 is a tubular body 12 having an outstanding flange 13 formed thereabout which rests upon the top of the cap 3. The lower portion of the body 12 beneath the flange is exteriorly threaded as indicated at 1 1- and threaded upon this portion 1 1, which extends beneath the underside of the cap 8, is a circular hollow body 15, the upper portion of which is opened to engage over the threaded end of the body 12. The lower portion of the body 15 is centrally apertured, and extending from the side wall is a threaded nipple 16 into which one end 17 of an angled tube indicated generally by the numeral 18, extends. This portion 17 of the tube 18 also extends through an aperture in the inner wall of the receptacle 6 and the other angled portion 19 of the tube extends downwardly into the receptacle 6 to a point adjacent the bottom thereof, as shown in Figure 1.

halounted upon the ear 20 formed upon the body 12, is a cap 21 which is hingedly attached to the ear 20 and acts to close the upper end of the body 12.

Extending through the body 12 and through the central portion of the body 15, through the lower side thereof, is a cylindrical gauze body 22 the lower end of which gauze cyiinder passes over the end of a nipple 23. This end of the nipple 23, which is indicated by the numeral 24, extends a substantial distance inwardly of the lower open bottom of the body 15, and sets up a baflie plate within the body, as hereinafter described. The lower end of the nipple 28 has threaded thereon the packing nut 25 between which nut and the lower end of the nipple there is secured the rubber packing or washer 26.

Before the cap 3 is placed in position in the filling spout 2 of the radiator, as shown in Figure 1, the overflow tube of the radiator is moved from its position at one side of the filling spout 2, to the center of the spout so that the rubber packing and nipple 23 and 26 may be extended over the end of the tube when the cap is placed in position in the manner shown. While the cap is off, a liquid, such as water is poured in through the passages 12 while the body is held in an inclined position, into the receptacle 6,

to fill the same, which operation, as will be readily seen when the cap is placed in position as shown in Figurel, seals the radiator preventing the passage of air into, or out of the same. It will be readily seen that. when the engine to which the radiator is tached, is started, the water which is in the radiator will become warm and due to the sealing of the radiator, the pressure within the same will be rapidly increased thus assisting in rapidly increasing the temperature of the water until the same goes to or above the boiling point. When this point is reached the steam and compressed air will escape through the apertures 11 into the receptacle (l foicing the fluid from this receptacle up through the pipe 18 filling the body 15 to the height of the battle 2 1-. Any excess fluid will pass through the screen over the baflie and escape through the overflow pipe 27 and steam and compressed air will also then escape through this overflow pipe and prevent damage to the radiator. iVhen this operation takes place the radiator temperature will be decreased and the fluid remaining in the lower portion of the body 15 will flow back to the pipe 18 into the receptacle 6 and again seal the radiator as in the first instance.

Mounted upon the top of the cap 3 is a motormeter or thermometer 28 the lower portion or stem 29 of which extends through an aperture in the cap to a substantial distance within the radiator filling spout. A nut 30 threaded upon the stem 29 bears against the washer 31 which in turn is forced against the underside of the cap and serves to maintain the radiator thermometer in steady upright position, in the manner shown.

Having thus described my invention what I claim is 1. An attachment of the character de scribed for internal combustion engine radiators having an overflow tube, comprising a filling opening cap, a hollow body carried upon the underside of said cap, means engageable over said tube for setting up com munication between the same and the interior of said body, and means to set up a fluid seal between said body interior and the interior of said radiator.

2. An attachment of the character described for internal combustion engine radiators having an overflow tube, comprising a filling opening cap, a hollow body carried upon the underside of said cap, means ongageable over said tube for setting up communication between the same and the interior of said body, an annular receptacle having its top fitted against and closed by said cap and depending from the same about said body, and a communicating tube leading from said body into and terminating adjacent the bottom of said receptacle, said receptacle having a series of inlet ports through the inner wall adjacent the top thereof and further being designed to contain a fluid for normally sealing the passage between the interior of the radiator and said overflow tube.

3. An attachment of the character described for internal combustion engine radiators having an overflow tube, comprising a filling opening cap, a hollow body carried upon the underside of said cap, means engageable over said tube for setting up communication between the same and the interior of said body, an annular receptacle having its top fitted against and closed by said cap and depending "from the same about said body, a communicating tube leading from said body into and terminating adjacent the bottom of said receptacle, said receptacle having a series of inlet ports through the inner wall adjacent the top thereof and further being designed to contain a fluid for normally sealing the passage between the in terior of the radiator and said overflow tube, and a baflie between said communicating tube and said tube en aging means to prevent said sealing fluid from flowing away through said overflow tube upon the increase of the pressure within the radiator.

In testimony whereof, I afflx my signature hereto.

KURT WV. E. HAMANN. 

